Drum.



A, D. CONVERSE,

DRUM.

APPLICATION FILED SEPT-16,1916.

1,221,142, Patented Apr. 3, 1917.

liwcnlor: Jlherbml). Com) arse,

D. CONVERSE, 0F WIVGHENDON, MASSACHUSETTS.

DRUM.

Specification of Letters Patent.

Patented. Apr. 3, i917.

Driginel application filed June 2, 1916, Serial No. 101,854. Divided and this application filed September 16,

To all whom moo coiwcrn:

Be it know tin 1, A-"rnnmon D. Cor rnnsn. a citizen or the United States of America, and a resident of VVinchendon, in the county of il crcester and Commonwealth of h/lassachusetts, have invented certain new and useful Improvements in Drums, of which the following specification.

This invention relates to drums and its object is the production of a toy drum which may be manufactured at reduced cost and which will have greater rigidity than the drum now in eneral use. The present application is a division of another application of mine filed June 2, 1916, and numbered 101,854.

The invention consists in providing'each head with a cup-shaped portion adapted to fit over the barrel of a drum and securing to the cylindrical flange formed thereon, an outwardly extending tuck hoop such as a cord against which the stay hoop fitted over ".id peripheral flange is adapted to be posi-' tionecl. I

The invention further consists in certain novel features of construction and arrangement of parts which will be fully understood by reference to the description of the draw ings and to the hereinafter given.

For the purpose of illustrating the invention, one preferred form thereof is illustrated in the drawings, this form having been found to give satisfactory and reliable results, although it is to be understood that the various instrumentalities of which the invention can be variously arranged and organized and that the invention is not limited to the. ore 'sc arrangement and or" ganization these instrumentalities as here in shown and 9f the drawings:

Figure 1 represents a vertical section of a drum embodying the principles of the present invention.

Fig. 2 represents aplan of" a head thereof,

Fig. 3 represents a plan of the head with the tuck hoop or cord secured thereto.

Fig. l represents a section on line 4% on Fig. 3.

Fig. 5 represents a vertical section of the dies used for forming a cylindrical depression in the head, a head being shown in section therein after the completion of the stamping operation, and

Serial No. 120,964.

Fig. 6 repre ents a section showing the cup-shaped head positioned in a stay hoop preparatory to being positioned over the end of the barrel of the drum.

Similar characters designate like parts throughout the several figures of the drawings.

In the drawings. 10 is a metal barrel having its ends turned inwarcly as at 11 to form a rounded. inwardly extending flange, preferably cylindrical in cross section, as shown in the drawings. Over each end ofthe barrel 10 is a cupshaped head 12 of skin. tough paper, or similar material having a cord 13 secured to the cylindrical portion thereof adjacent to the edge. This cord is preferably formed of twisted fiber, as indicated in Fig. 3 of the drawings, said fiber pref rably being of the same material and color as the material from which the cup-shapedv head 12 is formed.

The cord of twisted fiber is secured to the head 12 by means of a row of stitches 14. This cord extending outwardly from the peripheral. portion of the head 12 forms a shoulder against which rests the inner ends of the stay hoops 15. These stay hoops 15 are preferably formed of metal with their opposite edges turned inwardly and inclosing a reinforcing member 16 of pasteboard or some similar material. The inwardly extending edges are preferably curved as shown in Figs. 1 and 6 of the drawings. Each. stay hoop 15-is provided with a plurality openings 17 therethrough adapted to receive the cords 18 by which the stay hoops may be drawn toward each other in the usual manner, thereby causing thehads 12 to be firmly stretched over the rounded edges of the flanges 11 at either end of the barrel 10.

In making the heads 12 a circular blank 19 is cut out, as indicated in Fig. 3 of the drawings. and then by means of a row of stitches 14- the cord 13 of twisted fiber is secured to one face thereof adjacent to the edge of said blank, all shown in Figs. 3 and l of the drawings. The blank 1.) with the cord 13v secured to one face thereof is then placed cord side down upon a die plate 20 and subjected topressure of a male die 21 which causes a depression to be formed in the centor of the head 12. as indicated in 5 of the drawings. When thus shaped the head 12 is adapted to be fitted over the end of the barrel 10.

Each head when thus fulfilled into a cupshape with the cords 13 extending outwardly from the per i hery of the cylindrical portion thereof is place; upon a stay hoop 15, as indicated in Fig. c of the drawings, the cord or tuck hoop resting upon the upper edge of each stay hoop lo. the depression in each head 152' is the same as the diameter oi the barrel l0, and each head supported by 1 ray hoop is then placed over an end of the barrel 10. The securing cords 18 are then inserted through the various openings 17, and when the stay hoops 15 have been drawn suiliciently toward each other to giro the required strength to the heads l2, the cords are secured in post tion in any well-known manner.

lly u'ialtinpj the took hoop 13 of twisted fiber. it has the appearance of a skin such as is usually used in the head oi a drum. By means of this constriu-tion a great saving in material is made, for in the constructum of the drum heretofore, the head must be or; much greater diameter so that its edges may be tucked in around the tuck hoop.

lly constructing the drum in the manner herein described, the twisted fiber cord seon red to the edges oi the head form the tuck hoop, and in a small sized drum there is a. saving of at least two inches in the diameter of the blanlgused to form the head. Obviously this saving in material is of great advantage.

Moreover, in the manufacture of toy drums where fiber is used in the construction of the drum heads, it has been very diliicultto fit the heads over the barrel, the material. not having suilicient strength to permit the head to be drawn over the opposite ends of the barrel. As a consequence, the tendency has always been for the stay hoop to rest substantially on the top of the head, and this permits it to be easily displaced, which is a great objection.

One of the main objects of this invention is to obviate this difiiculty and'provide a means whereby the head may be pulled down over the end of the barrel of the drum, and thereby permit a considerable portion of the stay hoop to also be pulled down end of the barrel, as shown in 1 of the drawings. By means of this construction the entire drum is greatly strengthened.

Heretotore in the manufacture of drums, in order to stretch the head over the end of the barrel, it was necessary to Wet the head. When the head while in this condition was pulled down or r the edge of the barrel, it was very liable to wear the head thin in spots, especially if there was any rough portion or other obstruction on the edge of the barrel where the head was drawn over.

By subjecting the blank from which the The diameter of over the head is manufactured to pressure and forc it into the cup-shape prior to its being positioned over the end of the barrel, these objections have been entirely overcome.

By providing inwardly projecting curred flanges at each end of the barrel 10, all clanger of injuring the head when in position prevented.

l-leretolore, in the manufacture of toy drums, ,sltilled operators were required to pull the edges of the head around the tack hoop and secure said edges in position. By means of the method herein described, this operation of tucking the edges of the head around the tuclr hoop will be entirely eliminated, i'naking the entire method of forming the drum much. cheaper than the manufacture of the drum in the old way.

Not only the present method much cheaper than the method heretofore used, but the head and the stay hoop may be formed entirely by machinery. and a much more perfect article produced.

The present method is made possible on account of the ability to use metal hoops, as heretofore when the wooden hoogs were used, these would vary in and also in shape, and as a consequence it would be almost impossible to n'nu'nifacturc the heads in the manner herein described.

Owing to the variation. in the size and shape of wooden hoops the heads would not accurately fit the hoops, and consequently in the former method of constructing drums it would always be necessary to tit each incl: hoop and head to the stay hoop.

In the present method of manufacturing these drums, all of these objections have been entirely obviated. Heretotore, in the manufacture of the barrels of drums, it has been the usual practice to crimp the edges at right angles on hand machine or nail a wooden hoop around the inside of the opposite ends of the barrel, said wooden hoop projecting above the metal barrel.

Both of these methods have been found in practice to give imperfect results,'as it is impossible to secure thereby a perfectly cylindrical. barrel. I

" By making the ends 01: the barrel With an inwardly curved flange substantially cylindrical in cross section, it is possible to secure a perfectly cylindrical barrel, while the inwardly extending flange formed at either end thereof strengthens the barrel and retains; it in its cylindrical form even under considerable pressure.

Another advantage of constructing" the barrel in this manner is that the curved edges at either end of the barrel give a good bearing surface over which the head may be turned in the process of tightening.

lleretofore in the construction of these toy drums, it was necessary to draw the head over a square corner which made the tighteninv f $116 wnsi emu 0 Email,

It is believed t any :idmntages of this inventian Jliiy' indersiomi from the, for going a i scriptinni Having thus my inventien claim:

1'. A. drum comprising a barrel having an inwardly turned flange at each and, said flange being cyiindricui in cross section; a head at each and provided with a member secured by a 0 itches t0 the edge thereof and surrminf r the p ripl :ry of 2100p extending over the 7 head 1121i; bearing liouter poriiion m vi-1:11. metiy against said 1112mm and means for simian the stay 1100;) an. adjusted p0 ition.

2. i2. drum cempris g 5 barrel iurvmg an lmmrriy turned fianga viz each and, said i, Iliilidli m cmsi Li ation; a pmvludd \1 1th a newbie thereof and si1r- 111550 being head at each 00rd rmend said st of am said. can? and E1009 1H :1 usted 3. A drum 6:

n's'viued with c 1'8u U a raw or S'UilCilOS in its ouier faceadgaceni the edge and strercheai ever and said barrel;

siiaperi he-mi hzwi 11g outwardiy extending peripheral member secured by a raw of stitches to ihe cylindrical portmn of said be drawn toward the opposite end of said barrel to stretch said head.

(5. A drum cmnprising a barrel; a shaped fiber head provided with an annular flange fitting over "J mid of saixbarrei; a separate projecting irieznber secured to the periphery or said fhmgs with its lower face flush with him ed of said head; a Stay hoop surrounding rim flange and aduptad to be drawn iilii) direct Contact with said. proj' Latin ember; Ii means for securing the stay 1100;) in jizsted position,

7. A drum co; iprising a barrel; a shaped hem} provided with an annular flange fitting war :he head (if bnrrei; a projecting member secured by stitshes is the periphery 0 a ith its -iower face flush with.

the edge 0f said head; stay hoop surreundmg flung: and adapted t0 be drawn i rte direct c-oiitaci with said projecting iwhendon this 14th Witnesses;

PEARL M. HALL, MARY LL CALLAHAN.

member; and means for securing the stay- 

